678837504 has 72 divisors (see below), whose sum is σ = 1865043712. Its totient is φ = 218972160.

The previous prime is 678837469. The next prime is 678837527. The reversal of 678837504 is 405738876.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9552 + ... + 38064.

Almost surely, 2^678837504 is an apocalyptic number.

678837504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678837504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932521856).

678837504 is an abundant number, since it is smaller than the sum of its proper divisors (1186206208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678837504 is a wasteful number, since it uses less digits than its factorization.

678837504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28563 (or 28549 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 678837504 is about 26054.5102429503. The cubic root of 678837504 is about 878.8645410636.

The spelling of 678837504 in words is "six hundred seventy-eight million, eight hundred thirty-seven thousand, five hundred four".